What is the shelf life of silane and do products require refrigeration?

New silanes [Clearfil Silane Kit (Kuraray America); Versa-Link Porcelain Bonding System (Sultan Healthcare)] are stabilized and typically have a shelf life of two years. Keep these products refrigerated and remove them a few minutes before use. Silanes are volatile, so firmly recap the bottle after each use. Versa-Link Porcelain Bonding System is also available in unit-dose ampules.